Hi everyone, Been working on my Spindle Control with the adaptor board to allow either PWM from PP DB25-14 and DB25-16 for Direction. Or for MACH Step on DB25-14 instead of PWM by simply checking a different box.
I've had the PP version of LinuxCNC also running the step/dir out but it just can't step fast enough to give me the full 3000 RPM. So today I disconnected the PP port cable. Plugged power and Ethernet cable into the 7i92H and plugged it into the BoB DB-25. Then ran the version of LinuxCNC config that used the 7i92H. Homed. No problem. Spindle spins up/down and reverses with no problem. Ran a small circle cutting G-Code program that lifts the tool about 1" out and then back down for the next level. And suddenly half way through I lost Z motion. Restarting LinuxCNC did nothing. ESTOP OFF/ON did nothing and that removes all power from the motors. The Z axis is a GECKO stepper motor run open loop and no fault signals to the system. Truly move it and expect it to do it. I did first suspect the GECKO but since the ESTOP removes power to it and then recovery puts power back it didn't appear to be the Gecko. The final solution was to stop LinuxCNC, cycle power to the 7i92H by unplugging the external 5V and plugging it back in. Wait a few seconds for Ethernet connectivity and then again run LinuxCNC with the MESA config folder. The BoB power was never removed. Now homing works. Spindle works. Same G-Code made it all the way through. I shouldn't have to cycle power to fix this. Something as simple as an ESTOP should be able to generate a HAL command to the 7i92H driver that causes it to pretend a power cycle occurred. Does this exist? I've never had the Z axis vanish from the PP. I think it's happened before with the 7i92H but I'm not sure. So I guess two questions. 1. If it happens again what type of diagnostics can I generate to see what was happening under the covers. 2. Is there a way to clear it without opening up the cabinet and removing 5V from the 7i92H (I guess a system power cycle would do that too without opening the cabinet). Thanks John Dammeyer _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
